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EthernetInterface/EthernetInterface.cpp@0:ecaf3e593122, 2016-02-29 (annotated)

Committer:
Tuxitheone
Date:
Mon Feb 29 18:59:15 2016 +0000
Revision:
0:ecaf3e593122
TankCounter

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Tuxitheone 0:ecaf3e593122 1 /* EthernetInterface.cpp */
Tuxitheone 0:ecaf3e593122 2 /* Copyright (C) 2012 mbed.org, MIT License
Tuxitheone 0:ecaf3e593122 3 *
Tuxitheone 0:ecaf3e593122 4 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
Tuxitheone 0:ecaf3e593122 5 * and associated documentation files (the "Software"), to deal in the Software without restriction,
Tuxitheone 0:ecaf3e593122 6 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
Tuxitheone 0:ecaf3e593122 7 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
Tuxitheone 0:ecaf3e593122 8 * furnished to do so, subject to the following conditions:
Tuxitheone 0:ecaf3e593122 9 *
Tuxitheone 0:ecaf3e593122 10 * The above copyright notice and this permission notice shall be included in all copies or
Tuxitheone 0:ecaf3e593122 11 * substantial portions of the Software.
Tuxitheone 0:ecaf3e593122 12 *
Tuxitheone 0:ecaf3e593122 13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
Tuxitheone 0:ecaf3e593122 14 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
Tuxitheone 0:ecaf3e593122 15 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
Tuxitheone 0:ecaf3e593122 16 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
Tuxitheone 0:ecaf3e593122 17 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Tuxitheone 0:ecaf3e593122 18 */
Tuxitheone 0:ecaf3e593122 19 #include "EthernetInterface.h"
Tuxitheone 0:ecaf3e593122 20
Tuxitheone 0:ecaf3e593122 21 #include "lwip/inet.h"
Tuxitheone 0:ecaf3e593122 22 #include "lwip/netif.h"
Tuxitheone 0:ecaf3e593122 23 #include "netif/etharp.h"
Tuxitheone 0:ecaf3e593122 24 #include "lwip/dhcp.h"
Tuxitheone 0:ecaf3e593122 25 #include "arch/lpc17_emac.h"
Tuxitheone 0:ecaf3e593122 26 #include "lpc_phy.h"
Tuxitheone 0:ecaf3e593122 27 #include "lwip/tcpip.h"
Tuxitheone 0:ecaf3e593122 28
Tuxitheone 0:ecaf3e593122 29 #include "mbed.h"
Tuxitheone 0:ecaf3e593122 30
Tuxitheone 0:ecaf3e593122 31 /* TCP/IP and Network Interface Initialisation */
Tuxitheone 0:ecaf3e593122 32 static struct netif lpcNetif;
Tuxitheone 0:ecaf3e593122 33
Tuxitheone 0:ecaf3e593122 34 static char mac_addr[19];
Tuxitheone 0:ecaf3e593122 35 static char ip_addr[17] = "\0";
Tuxitheone 0:ecaf3e593122 36 static bool use_dhcp = false;
Tuxitheone 0:ecaf3e593122 37
Tuxitheone 0:ecaf3e593122 38 static Semaphore tcpip_inited(0);
Tuxitheone 0:ecaf3e593122 39 static Semaphore netif_linked(0);
Tuxitheone 0:ecaf3e593122 40 static Semaphore netif_up(0);
Tuxitheone 0:ecaf3e593122 41
Tuxitheone 0:ecaf3e593122 42 static void tcpip_init_done(void *arg) {
Tuxitheone 0:ecaf3e593122 43 tcpip_inited.release();
Tuxitheone 0:ecaf3e593122 44 }
Tuxitheone 0:ecaf3e593122 45
Tuxitheone 0:ecaf3e593122 46 static void netif_link_callback(struct netif *netif) {
Tuxitheone 0:ecaf3e593122 47 if (netif_is_link_up(netif)) {
Tuxitheone 0:ecaf3e593122 48 netif_linked.release();
Tuxitheone 0:ecaf3e593122 49 }
Tuxitheone 0:ecaf3e593122 50 }
Tuxitheone 0:ecaf3e593122 51
Tuxitheone 0:ecaf3e593122 52 static void netif_status_callback(struct netif *netif) {
Tuxitheone 0:ecaf3e593122 53 if (netif_is_up(netif)) {
Tuxitheone 0:ecaf3e593122 54 strcpy(ip_addr, inet_ntoa(netif->ip_addr));
Tuxitheone 0:ecaf3e593122 55 netif_up.release();
Tuxitheone 0:ecaf3e593122 56 }
Tuxitheone 0:ecaf3e593122 57 }
Tuxitheone 0:ecaf3e593122 58
Tuxitheone 0:ecaf3e593122 59 static void init_netif(ip_addr_t *ipaddr, ip_addr_t *netmask, ip_addr_t *gw) {
Tuxitheone 0:ecaf3e593122 60 tcpip_init(tcpip_init_done, NULL);
Tuxitheone 0:ecaf3e593122 61 tcpip_inited.wait();
Tuxitheone 0:ecaf3e593122 62
Tuxitheone 0:ecaf3e593122 63 memset((void*) &lpcNetif, 0, sizeof(lpcNetif));
Tuxitheone 0:ecaf3e593122 64 netif_add(&lpcNetif, ipaddr, netmask, gw, NULL, lpc_enetif_init, tcpip_input);
Tuxitheone 0:ecaf3e593122 65 netif_set_default(&lpcNetif);
Tuxitheone 0:ecaf3e593122 66
Tuxitheone 0:ecaf3e593122 67 netif_set_link_callback (&lpcNetif, netif_link_callback);
Tuxitheone 0:ecaf3e593122 68 netif_set_status_callback(&lpcNetif, netif_status_callback);
Tuxitheone 0:ecaf3e593122 69 }
Tuxitheone 0:ecaf3e593122 70
Tuxitheone 0:ecaf3e593122 71 static void set_mac_address(void) {
Tuxitheone 0:ecaf3e593122 72 char mac[6];
Tuxitheone 0:ecaf3e593122 73 mbed_mac_address(mac);
Tuxitheone 0:ecaf3e593122 74 snprintf(mac_addr, 19, "%02x:%02x:%02x:%02x:%02x:%02x", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
Tuxitheone 0:ecaf3e593122 75 }
Tuxitheone 0:ecaf3e593122 76
Tuxitheone 0:ecaf3e593122 77 int EthernetInterface::init() {
Tuxitheone 0:ecaf3e593122 78 use_dhcp = true;
Tuxitheone 0:ecaf3e593122 79 set_mac_address();
Tuxitheone 0:ecaf3e593122 80 init_netif(NULL, NULL, NULL);
Tuxitheone 0:ecaf3e593122 81 return 0;
Tuxitheone 0:ecaf3e593122 82 }
Tuxitheone 0:ecaf3e593122 83
Tuxitheone 0:ecaf3e593122 84 int EthernetInterface::init(const char* ip, const char* mask, const char* gateway) {
Tuxitheone 0:ecaf3e593122 85 use_dhcp = false;
Tuxitheone 0:ecaf3e593122 86
Tuxitheone 0:ecaf3e593122 87 set_mac_address();
Tuxitheone 0:ecaf3e593122 88 strcpy(ip_addr, ip);
Tuxitheone 0:ecaf3e593122 89
Tuxitheone 0:ecaf3e593122 90 ip_addr_t ip_n, mask_n, gateway_n;
Tuxitheone 0:ecaf3e593122 91 inet_aton(ip, &ip_n);
Tuxitheone 0:ecaf3e593122 92 inet_aton(mask, &mask_n);
Tuxitheone 0:ecaf3e593122 93 inet_aton(gateway, &gateway_n);
Tuxitheone 0:ecaf3e593122 94 init_netif(&ip_n, &mask_n, &gateway_n);
Tuxitheone 0:ecaf3e593122 95
Tuxitheone 0:ecaf3e593122 96 return 0;
Tuxitheone 0:ecaf3e593122 97 }
Tuxitheone 0:ecaf3e593122 98
Tuxitheone 0:ecaf3e593122 99 int EthernetInterface::connect(unsigned int timeout_ms) {
Tuxitheone 0:ecaf3e593122 100 NVIC_SetPriority(ENET_IRQn, ((0x01 << 3) | 0x01));
Tuxitheone 0:ecaf3e593122 101 NVIC_EnableIRQ(ENET_IRQn);
Tuxitheone 0:ecaf3e593122 102
Tuxitheone 0:ecaf3e593122 103 int inited;
Tuxitheone 0:ecaf3e593122 104 if (use_dhcp) {
Tuxitheone 0:ecaf3e593122 105 dhcp_start(&lpcNetif);
Tuxitheone 0:ecaf3e593122 106
Tuxitheone 0:ecaf3e593122 107 // Wait for an IP Address
Tuxitheone 0:ecaf3e593122 108 // -1: error, 0: timeout
Tuxitheone 0:ecaf3e593122 109 inited = netif_up.wait(timeout_ms);
Tuxitheone 0:ecaf3e593122 110 } else {
Tuxitheone 0:ecaf3e593122 111 netif_set_up(&lpcNetif);
Tuxitheone 0:ecaf3e593122 112
Tuxitheone 0:ecaf3e593122 113 // Wait for the link up
Tuxitheone 0:ecaf3e593122 114 inited = netif_linked.wait(timeout_ms);
Tuxitheone 0:ecaf3e593122 115 }
Tuxitheone 0:ecaf3e593122 116
Tuxitheone 0:ecaf3e593122 117 return (inited > 0) ? (0) : (-1);
Tuxitheone 0:ecaf3e593122 118 }
Tuxitheone 0:ecaf3e593122 119
Tuxitheone 0:ecaf3e593122 120 int EthernetInterface::disconnect() {
Tuxitheone 0:ecaf3e593122 121 if (use_dhcp) {
Tuxitheone 0:ecaf3e593122 122 dhcp_release(&lpcNetif);
Tuxitheone 0:ecaf3e593122 123 dhcp_stop(&lpcNetif);
Tuxitheone 0:ecaf3e593122 124 } else {
Tuxitheone 0:ecaf3e593122 125 netif_set_down(&lpcNetif);
Tuxitheone 0:ecaf3e593122 126 }
Tuxitheone 0:ecaf3e593122 127
Tuxitheone 0:ecaf3e593122 128 NVIC_DisableIRQ(ENET_IRQn);
Tuxitheone 0:ecaf3e593122 129
Tuxitheone 0:ecaf3e593122 130 return 0;
Tuxitheone 0:ecaf3e593122 131 }
Tuxitheone 0:ecaf3e593122 132
Tuxitheone 0:ecaf3e593122 133 char* EthernetInterface::getMACAddress() {
Tuxitheone 0:ecaf3e593122 134 return mac_addr;
Tuxitheone 0:ecaf3e593122 135 }
Tuxitheone 0:ecaf3e593122 136
Tuxitheone 0:ecaf3e593122 137 char* EthernetInterface::getIPAddress() {
Tuxitheone 0:ecaf3e593122 138 return ip_addr;
Tuxitheone 0:ecaf3e593122 139 }